Tow in overdrive?

[Red '97]

i have a friend with a '90 half ton chevy that had to have its tranny replaced from towing a 5th wheel in overdrive. im wondering how stong the overdrive gear on the e40d is and if i should always leave it off or what when i haul. thanks!

[Nitro41]

You have 4.10's you'll be fine as long as you dont thrash it. My buddy tows a 32' triple axle weighing a solid 18k lbs, and thats with a bone stock 7.3 Superduty.

Get yourself a nice trans fluid cooler (<$80)and a trans temp guage. With the mods you have done, you wont hurt anything because of power slipping it.

These trucks were built to tow and do a great job as long as you use common sense.

[351fifty]

I towed a 13k trailer for 8 years with my f150 e4od with it in od and 3:55's till tranny went, my current psd always have it in od never had a single issue

[Red '97]

hmmmmm alright fellas thanks. helped him a little with putting his new tranny back in and ive decided that i REALLY dont wanna replace mine lol